FIELD: deep biological treatment of sewage. SUBSTANCE: compact plant for sewage treatment is made in form of two isolated and coaxially located vessels. Located in the external vessel id double-deck settler, whose sedimentation trough is annular. Internal vessel accommodates bioreactor with sunk medium, aerating device in form of submersible pump with ejector and secondary settler. Secondary settler is furnished with thin-layer module with removable highly porous filter installed in the upper part. EFFECT: higher efficiency. 7 cl, 2 dwg, 1 tbl
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